[API reference](https://evolu.dev/docs/api-reference) › [@evolu/web](https://evolu.dev/docs/api-reference/web) › createMessagePort

```ts
const createMessagePort: CreateMessagePort;
```

Defined in: [Worker.ts:104](https://github.com/evoluhq/evolu/blob/b6ade4b22d4be1758761a2712668e870d3e602c7/packages/web/src/Worker.ts#L104)

Creates an Evolu [MessagePort](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessagePort) from a Web MessagePort.

Use this for ports received via postMessage transfer.